Exploring the galaxies;
Moore, Patrick.
Deakins, Cyril.illus.
Deakins, Sylvia,illus.
London ; New York : Odhams,
1968.
Describes different types of galaxies, the instruments developed to study them, and man's increasing knowledge about the universe.
Describes different types of galaxies, the instruments developed to study them, and man's increasing knowledge about the universe.
Astronomy
Astronomy.